Problem importing AND conditions in Choice state

[pauljura]

Hi, I'm importing an existing state machine that has a Choice state with a condition like this:

{
    "Type": "Choice",
    "Choices": [{
            "And": [{
                    "Variable": "$.url",
                    "IsPresent": true
                }, {
                    "Variable": "$.url",
                    "IsString": true
                }
            ],
            "Comment": "Check if $.url exists and is string",
            "Next": "Pass"
        }
    ],
    "Default": "Set default URL"
}

After importing, the choice condition becomes:
(undefined) && (undefined)

The condition in the exported JSON turns into this:

"And": [
	{},
	{}
],